Microwave magnetic field modulation of spin torque oscillator based on perpendicular magnetic tunnel junctions

Witold Skowroński; Jakub Chęciński; Sławomir Ziętek; Kay Yakushiji; Shinji Yuasa

Microwave magnetic field modulation of spin torque oscillator based on perpendicular magnetic tunnel junctions

Applied Physics 2019-09-23 v1

Authors: Witold Skowroński , Jakub Chęciński , Sławomir Ziętek , Kay Yakushiji , Shinji Yuasa

Abstract

Modulation of a spin-torque oscillator (STO) signal based on a magnetic tunnel junction (MTJ) with perpendicularly magnetized free layer is investigated. Magnetic field inductive loop was created during MTJ fabrication process, which enables microwave field application during STO operation. The frequency modulation by the microwave magnetic field of up to 3 GHz is explored, showing a potential for application in high-data-rate communication technologies. Moreover, an inductive loop is used for self-synchronization of the STO signal, which after field-locking exhibits significant improvement of the linewidth and oscillation power.

Keywords

spin torque oscillator magnetic tunnel junction perpendicular magnetic anisotropy microwave magnetic field modulation frequency modulation self-synchronization

Cite

@article{arxiv.1909.09503,
  title  = {Microwave magnetic field modulation of spin torque oscillator based on perpendicular magnetic tunnel junctions},
  author = {Witold Skowroński and Jakub Chęciński and Sławomir Ziętek and Kay Yakushiji and Shinji Yuasa},
  journal= {arXiv preprint arXiv:1909.09503},
  year   = {2019}
}

Comments

4 pages, 5 figures

Microwave magnetic field modulation of spin torque oscillator based on perpendicular magnetic tunnel junctions

Abstract

Keywords

Cite

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